diff --git a/lit-test/test/exceptions/reraise.py b/lit-test/test/exceptions/reraise.py
index 2a02b523d..911b22322 100644
--- a/lit-test/test/exceptions/reraise.py
+++ b/lit-test/test/exceptions/reraise.py
@@ -3,7 +3,7 @@
 # REQUIRES: exceptions
 
 def f():
-    # CHECK-L: Uncaught ZeroDivisionError
+    # CHECK-L: Uncaught 0:ZeroDivisionError
     # CHECK-L: at input.py:${LINE:+1}:
     1/0
 
diff --git a/lit-test/test/exceptions/reraise_update.py b/lit-test/test/exceptions/reraise_update.py
index 891e7685d..11bd30639 100644
--- a/lit-test/test/exceptions/reraise_update.py
+++ b/lit-test/test/exceptions/reraise_update.py
@@ -9,7 +9,7 @@ def g():
     try:
         f()
     except Exception as e:
-        # CHECK-L: Uncaught ZeroDivisionError
+        # CHECK-L: Uncaught 0:ZeroDivisionError
         # CHECK-L: at input.py:${LINE:+1}:
         raise e
 
diff --git a/lit-test/test/exceptions/uncaught.py b/lit-test/test/exceptions/uncaught.py
index 6044f8bf2..13b83ec22 100644
--- a/lit-test/test/exceptions/uncaught.py
+++ b/lit-test/test/exceptions/uncaught.py
@@ -2,6 +2,6 @@
 # RUN: OutputCheck %s --file-to-check=%t
 # REQUIRES: exceptions
 
-# CHECK-L: Uncaught ZeroDivisionError: cannot divide by zero (0, 0, 0)
+# CHECK-L: Uncaught 0:ZeroDivisionError: cannot divide by zero (0, 0, 0)
 # CHECK-L: at input.py:${LINE:+1}:
 1/0